Molecular aspects of tomato (Solanum lycopersicum) vascular wilt by Fusarium oxysporum f. sp. lycopersici and antagonism by Trichoderma spp.

2021 ◽  
Vol 40 (1) ◽  
Author(s):  
Paula Andrea Castillo-Sanmiguel ◽  
Laura Rocío Cortés-Sánchez ◽  
Jovanna Acero-Godoy
Keyword(s):  
Fusarium Oxysporum ◽  
Solanum Lycopersicum ◽  
Negative Impact ◽  
Vascular Wilt ◽  
Trichoderma Spp ◽  
Genetic Characteristics ◽  
Synthetic Chemicals ◽  
Efficient Alternative ◽  
Molecular Aspects ◽  
The One

<p>Tomato plants (<em>Solanum lycopersicum</em>) are susceptible to the infection by diverse pathogens that cause devastating diseases such as vascular wilt, which causes great losses at the production level. The fungus <em>Fusarium oxysporum</em> f. sp. <em>lycopersici</em> (<em>Fol</em>) is one of the etiologic agents of this disease and its control lies in the use of synthetic chemicals which generate a negative impact in both health and the environment; thus, it is necessary to implement biological control as a healthier and more efficient alternative. The fungus <em>Trichoderma</em> spp. is a favorable option to be employed as a biocontroller against this pathogen thanks to its antagonist mechanisms, determined by metabolic and genetic characteristics. On the one hand, for <em>Fol</em> it is indispensable the activation of signaling routes such as MAPK Fmk1, MAPK Mpk1 y HOG, while <em>Trichoderma</em> spp. uses effectors involved in the interaction with the plant such as proteins, enzymes and secondary metabolites that also strengthen its immune response against infection, determined by both Pathogen Associated Molecular Patterns (PAMP) and effectors. Therefore, this article makes a review about the mentioned characteristics and suggests a greater application of tools and molecular markers for the management of this disease.</p>

scholarly journals BIOCONTROL POTENTIAL OF TRICHODERMA SPP. AGAINST FUSARIUM OXYSPORUM IN SOLANUM LYCOPERSICUM L.

2020 ◽  
pp. 156-161
Author(s):  
Pavithra Ramasamy ◽  
LALITHA SUNDARAM
Keyword(s):  
Fusarium Oxysporum ◽  
Solanum Lycopersicum ◽  
Trichoderma Viride ◽  
Control Plant ◽  
Dry Weight ◽  
Trichoderma Spp ◽  
Trichoderma Species ◽  
Solanum Lycopersicum L ◽  
Soil Microbial Population ◽  
Pot Culture

Objective: The main objective of this study was to determine the effect of biocontrol Trichoderma species agent against Fusarium oxysporum in Solanum lycopersicum L. Methods: Genus Trichoderma effective biocontrol agent against fungal, bacterial pathogen. The fungal isolates Trichoderma viride (Tr01), Trichoderma harzianum (Tr02), and F. oxysporum (Fu04) were also identified through morphological characterization observed under a light microscope (10x×40x). The isolates (Tr01, Tr02, Fu04) were confirmed through genetic DNA isolation and polymerase chain reaction analysis. After that pot culture study was conducted to test the antagonistic potential (Tr01, Tr02) and against (Fu04). Seeds of tomato (S. lycopersicum L.) were used in this experiment; treatment such as control, Tr01, Tr02, Fu04, Tr01+ Fu04, and Tr02+ Fu04 was given to the seeds sown in pots and maintained in appropriate distances. Results: In pot culture after 45th day after inoculation of bioinoculated plant (Tr02), significantly enhances plant length, fresh weight, dry weight, chlorophyll content, nitrogen content, NPK content, and soil microbial population. Conclusion: In this experiment, Trichoderma spp. to control plant pathogen and improve yield and quality of crop. Fungal species belonging to the genus Trichoderma act as a biological agent. Bioinoculated plant (Tr02) significantly enhances plant growth ability to with stand under nutrient deficient conditions.

scholarly journals Tomato (Solanum lycopersicum L.) and Fusarium oxysporum f. sp. lycopersici interaction. A review

2021 ◽  
Vol 24 (1) ◽  
Author(s):  
Silvia Patricia López-Zapata ◽  
Dora Janeth García-Jaramillo ◽  
Walter Ricardo López ◽  
Nelson Ceballos-Aguirre
Keyword(s):  
Fusarium Oxysporum ◽  
Solanum Lycopersicum ◽  
Molecular Mechanisms ◽  
Ecological Impact ◽  
Wilt Disease ◽  
Vascular Wilt ◽  
Solanum Lycopersicum L ◽  
Genetic Level ◽  
The Subject ◽  
High Degree

The interaction between plants and pathogens is a very dynamic and complex relationship that also includes a high degree of specificity, and it is precisely this last characteristic which triggers such important responses in the survival of one or the other. The pathosystem formed by tomato (Solanum lycopersicum L.) and Fusarium oxysporum f. sp. lycopersici (Fol) has been the subject of multiple studies due to the importance of the vegetable worldwide and for the economic and ecological impact of the fungus responsible for the vascular wilt disease in tomato, causing losses that go up to 100%. One way to find alternatives for the management of any pathosystem is to know the actors involved and the mechanisms that govern the interaction through technological and scientific advances that clearly show how the interaction develops on a genetic level. This review collects the information from different scientific sources with focus on the knowledge of the fungus, tomato cultivation and plant defense applied to this pathosystem, as well as the molecular mechanisms.

Pengaruh Kepercayaan Terhadap Loyalitas Konsumen Yang Memunculkan Distrust

2019 ◽  
Vol 3 (2) ◽  
pp. 100-112
Author(s):  
Septian Wahyudi
Keyword(s):  
Research Method ◽  
Negative Impact ◽  
Consumer Confidence ◽  
Consumer Loyalty ◽  
The One ◽  
Loyal Customers

The company certainly wants to increase its sales and increase the number of its customers so that all efforts and methods are carried out, including in building consumer confidence, thus making these consumers become loyal customers or commonly referred to as customers. But on the one hand the trust built by the company actually has a negative impact, namely the emergence of distrust because the frequency of the company offers a variety of products that are sometimes not needed by consumers, this paper is made to answer these phenomena and problems in a concise manner.This research method is by analyzing criticism of several studies about trust that affect consumer loyalty which results in the absence of influence between trust in consumer loyalty.

scholarly journals Carabid Beetle (Coleoptera: Carabidae) Response to Soil Properties of Urban Wastelands in Warsaw, Poland

2020 ◽  
Vol 12 (24) ◽  
pp. 10673
Author(s):  
Axel Schwerk ◽  
Marzena Wińska-Krysiak ◽  
Arkadiusz Przybysz ◽  
Ewa Zaraś-Januszkiewicz ◽  
Piotr Sikorski
Keyword(s):  
Negative Impact ◽  
Carabid Beetle ◽  
Carabid Beetles ◽  
Soil Parameters ◽  
City Development ◽  
Space Management ◽  
Trade Offs ◽  
Beetle Assemblages ◽  
Trace Element Contamination ◽  
The One

Urban wasteland is of special interest to city planners. However, to integrate such areas into city space management with consideration of nature conservation aspects, a sound assessment of their ecological potential is necessary. The aim of this paper was to analyze whether carabid beetle assemblages of the wastelands are affected by soil parameters, particularly trace element contamination. Therefore, we studied the carabid fauna in relation to selected soil parameters on 56 sampling plots situated in 24 wastelands located in the city of Warsaw (Poland). The results have confirmed our assumptions that the number of species, as well as the number of individual carabid beetles, are negatively affected by an increasing amount of pollutants in the soil. Particularly, the trace elements Pb, Cu, and Cd showed a significantly negative impact. The results are of value when it comes to the use of urban wastelands in the context of sustainable city development. Future use of urban wastelands will be faced with trade-offs between the use for public interests (e.g., housing space) and ecological interests. Phytoremediation and entomoremediation may be included in decontamination measures. The results of studies, such as the one conducted by us, may help to select the respective wastelands for certain purposes.

scholarly journals A procedure for the introduction of leanness into a company

2021 ◽  
Author(s):  
Davorin Cimermančič ◽  
Janez Kušar ◽  
Tomaž Berlec
Keyword(s):  
Negative Impact ◽  
General Procedure ◽  
Portfolio Analysis ◽  
The Other ◽  
Business Operations ◽  
Step Procedure ◽  
The One ◽  
A Company

AbstractChanging a traditional company into a lean one is a very complex and time-consuming process that needs to be addressed in an appropriate way, otherwise the project of introduction of leanness into a company may fail on the one hand and even have a negative impact on business operations of the company on the other. When introducing a change, a step-by-step procedure leading to a progress may be of great help. The paper outlines a general procedure of leanness, an important part of which is a lean agent. A portfolio analysis is also used as a measure of leanness or as an indicator of the desired direction. The applied working methods were mainly active workshops and interviews with employees. The procedure has been tested on an example of a Slovene company; first, the existing situation is outlined, then the leanness steps taken according to the procedure and the final result after the first transition of the procedure.

scholarly journals The Non-Pathogenic Fusarium oxysporum Fo47 Induces Distinct Responses in Two Closely Related Solanaceae Plants against the Pathogen Verticillium dahliae

2021 ◽  
Vol 7 (5) ◽  
pp. 344
Author(s):  
Javier Veloso ◽  
José Díaz
Keyword(s):  
Fusarium Oxysporum ◽  
Solanum Lycopersicum ◽  
Capsicum Annuum ◽  
Verticillium Dahliae ◽  
Host Species ◽  
Competitive Inhibitor ◽  
Differentially Expressed ◽  
Biosynthetic Genes ◽  
Important Player ◽  
Tomato Mutant

The non-pathogenic Fusarium oxysporum Fo47 is able to protect Capsicum annuum (pepper) but not in Solanum lycopersicum (tomato) against the pathogen Verticillium dahliae. Transcriptomics of the plant during the interaction with Fo47 shows the induction of distinct set of genes in pepper and tomato. The number of differentially expressed (DE) genes in pepper (231 DE genes) is greater than the number of DE genes in tomato (39 DE genes) at 2 days after the treatment with Fo47. Ethylene related genes were present among the DE genes in both plants, and the up-regulation of ethylene biosynthetic genes was observed to be triggered during the interaction of both plants with Fo47. The treatment with MCP (1-Methylcyclopropene, an ethylene-competitive inhibitor) reduced the Fo47 protection in pepper against Verticillium dahliae. Intriguingly, Fo47 was able to protect the ethylene-insensitive tomato mutant Never-ripe (Nr) against Verticillium dahliae, but not the tomato wilt type cv Pearson. Overall, ethylene is shown to be an important player in the response to Fo47, but its role depends on the host species.

scholarly journals Trichoderma asperelloides Suppresses Nitric Oxide Generation Elicited by Fusarium oxysporum in Arabidopsis Roots

2014 ◽  
Vol 27 (4) ◽  
pp. 307-314 ◽  
Author(s):  
Kapuganti J. Gupta ◽  
Luis A. J. Mur ◽  
Yariv Brotman
Keyword(s):  
Nitric Oxide ◽  
Fusarium Oxysporum ◽  
No Production ◽  
Disease Development ◽  
Necrotrophic Pathogen ◽  
Trichoderma Spp ◽  
Promote Plant Growth ◽  
Induced Genes ◽  
Underlying Mechanisms ◽  
Lectin Protein

Inoculations with saprophytic fungus Trichoderma spp. are now extensively used both to promote plant growth and to suppress disease development. The underlying mechanisms for both roles have yet to be fully described so that the use of Trichoderma spp. could be optimized. Here, we show that Trichoderma asperelloides effects include the manipulation of host nitric oxide (NO) production. NO was rapidly formed in Arabidopsis roots in response to the soil-borne necrotrophic pathogen Fusarium oxysporum and persisted for about 1 h but is only transiently produced (approximately 10 min) when roots interact with T. asperelloides (T203). However, inoculation of F. oxysporum–infected roots with T. asperelloides suppressed F. oxysporum–initiated NO production. A transcriptional study of 78 NO-modulated genes indicated most genes were suppressed by single and combinational challenge with F. oxysporum or T. asperelloides. Only two F. oxysporum–induced genes were suppressed by T. asperelloides inoculation undertaken either 10 min prior to or after pathogen infection: a concanavlin A-like lectin protein kinase (At4g28350) and the receptor-like protein RLP30. Thus, T. asperelloides can actively suppress NO production elicited by F. oxysporum and impacts on the expression of some genes reported to be NO-responsive. Of particular interest was the reduced expression of receptor-like genes that may be required for F. oxysporum–dependent necrotrophic disease development.

Fusarium oxysporum f. sp. elaeidis. [Descriptions of Fungi and Bacteria].

1992 ◽  
Author(s):  
D. Brayford
Keyword(s):  
Fusarium Oxysporum ◽  
Geographical Distribution ◽  
Contaminated Soil ◽  
Oil Palm ◽  
Ivory Coast ◽  
Plant Material ◽  
Elaeis Guineensis ◽  
Central Africa ◽  
Vascular Wilt ◽  
West And Central Africa

Abstract A description is provided for Fusarium oxysporum f. sp. elaeidis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Elaeis guineensis (Oil palm). May also infect E. oleifera, E. madagascariensis and E. melanococca. DISEASE: Vascular wilt. GEOGRAPHICAL DISTRIBUTION: West and central Africa: Cameroon, Congo, Ivory Coast, Nigeria, Zaire. Possibly Colombia. TRANSMISSION: Contaminated soil or plant material. Potentially by means of seed (52, 4182).

Fusarium oxysporum f. sp. melonis. [Descriptions of Fungi and Bacteria].

1992 ◽  
Author(s):  
D. Brayford
Keyword(s):  
Saudi Arabia ◽  
Great Britain ◽  
Fusarium Oxysporum ◽  
Geographical Distribution ◽  
Cucumis Melo ◽  
Vascular Wilt ◽  
Distribution Map

Abstract A description is provided for Fusarium oxysporum f. sp. melonis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Cucumis melo (Muskmelon, Cantaloupe). DISEASE: Vascular wilt. GEOGRAPHICAL DISTRIBUTION: IMI Distribution Map 496. Africa: Morocco, Zimbabwe. Asia: India, Iraq, Iran, Israel, Japan, Korea, Lebanon, Philippines, Saudi Arabia, Thailand, USSR. Australasia: Australia. Europe: Belgium, France, Germany, Great Britain, Greece, Netherlands, Turkey. America: Canada, USA. TRANSMISSION: The fungus is soil borne and may be tramsmitted by seed.

Fusarium oxysporum f.sp. vasinfectum. [Descriptions of Fungi and Bacteria].

1964 ◽  
Author(s):  
C. Booth
Keyword(s):  
Puerto Rico ◽  
Fusarium Oxysporum ◽  
Central America ◽  
Geographical Distribution ◽  
West Indies ◽  
Central African Republic ◽  
Vascular Wilt ◽  
Vein Clearing ◽  
Cotton Plants ◽  
Cotton Belt

Abstract A description is provided for Fusarium oxysporum f.sp. vasinfectum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Gossypium spp., and species of Cajanus, Coffea, Hevea, Hibiscus, Medicago, Ricinus, Solanum and Vigna. DISEASE: Vascular wilt or Fusariosis of cotton is a disease affecting its host at all stages of its growth. Early symptoms on seedlings consist of vein clearing of the leaves followed by necrosis of the interveinal tissue and death of the leaves. On older plants leaves become chlorotic and the vascular tissues show a brown discolouration. Growth is retarded and the plant eventually wilts. GEOGRAPHICAL DISTRIBUTION: Africa: Congo, Central African Republic, Egypt, Ethiopia, Madagascar, Senegal, Somalia, Sudan, South Africa, Tanganyika, Uganda; Asia: Burma, China, Formosa, India, Indo-China, Iran, Iraq, Pakistan, U.S.S.R. ; Europe: France, Greece, Italy, Romania, Yugoslavia; North America, Mexico, U.S.A. (cotton belt); Central America & West Indies: Guatemala, Nevis, Nicaragua, Puerto Rico, Salvador, St. Vincent; South America: Argentina, Brazil, Chile, Colombia, Peru, Venezuela. (C.M.I. Map 362). TRANSMISSION: Soil-borne, but may also be transmitted by water and seed. The pathogen has been recovered from delineated seed obtained from infected cotton plants in the Central African Republic, Congo, Tanganyika and Brazil (32: 186; 33: 143; 40: 754; 41: 389). The percentage infection ranged from 0.2 to 5.0.

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